It's surprising how many people (in the comments) are outraged over what is basically a way for someone who is not a big company to outsource the inevitable legal wrangling of commercializing their invention.
What most people miss about rackets like this is that even after you pay off vultures like these they almost never offer you indemnity. That means some one else can sue you for exactly the same technology with a similar vague patent claim. In fact, they probably will, since you seem willing to pay.
Their (new) client's implementation could very well independently violate another patent or an unknown extension of the licensed patent. What would they gain from taking on this risk?
The broken patent system has bumbled along precisely because large companies generally have cross licensing deals with each other, leaving only the little guy subject to vague infringement claims. Now that there's a well-funded company which doesn't require 'incoming' licenses (by not making anything), there's real money involved for the big guys.
On another day I might be arguing for abolishing patents, but I just don't see how this is an abuse of the current system.
What most people miss about rackets like this is that even after you pay off vultures like these they almost never offer you indemnity. That means some one else can sue you for exactly the same technology with a similar vague patent claim. In fact, they probably will, since you seem willing to pay.